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RISTiming Uncertainty of the Lightning Imaging Sensor
Publisher: American Meteorological Society
Abstract: he timing uncertainty of the Lightning Imaging Sensor (LIS), on orbit, is not currently accurately known. This is due to an imprecise value of the frame rate in the literature; the conceptual design value of 500 frames per ...
Laboratory Measurements of Bed Load Sediment Transport Dynamics
Publisher: American Society of Civil Engineers
Abstract: A video technique has been developed to study the motion of individual sediment particles under waves. The technique was developed for moveable bed conditions under waves in the Davidson Laboratory’s large wave tank. ...
A Comparison of the Optical Pulse Characteristics of Intracloud and Cloud-to-Ground Lightning as Observed above Clouds
Publisher: American Meteorological Society
Abstract: The time-resolved optical waveforms at 777.4 nm and electric-field changes produced by intracloud and cloud-to-ground lightning flashes were measured above clouds from a U2 airplane (flying at a height of 20 km) at the ...
A Bayesian Approach to Assess the Performance of Lightning Detection Systems
Publisher: American Meteorological Society
Abstract: istorically, researchers explore the effectiveness of one lightning detection system with respect to another system; that is, the probability that system A detects a discharge given that system B detected the same discharge ...
Automatic Digital Radar Reflectivity Analysis of a Tornadic Storm
Publisher: American Meteorological Society
Abstract: The advantages of a new radar digital processing device (called STRADAP) are demonstrated by a case study of the tornado storm which struck Charlton, Mass., on 12 October 1962. STRADAP furnishes patterns of echo height and ...
Where Are the Lightning Hotspots on Earth?
Publisher: American Meteorological Society
Abstract: revious total lightning climatology studies using Tropical Rainfall Measuring Mission (TRMM) Lightning Imaging Sensor (LIS) observations were reported at coarse resolution (0.5°) and employed significant spatial and temporal ...
Combined Satellite- and Surface-Based Estimation of the Intracloud–Cloud-to-Ground Lightning Ratio over the Continental United States
Publisher: American Meteorological Society
Abstract: Four years of observations from the NASA Optical Transient Detector and Global Atmospherics National Lightning Detection Network are combined to determine the geographic distribution of the climatological intracloud?clou ...
Vertical Development of Lightning Activity Observed by the LDAR System: Lightning Bubbles
Publisher: American Meteorological Society
Abstract: In some Florida thunderstorm cells, impulsive very high frequency (VHF) radiation from lightning channels begins abruptly in a layer that is typically 3?6 km in diameter, 1?3 km tall, and initially located just above the ...
Laboratory Calibration of the Optical Transient Detector and the Lightning Imaging Sensor
Publisher: American Meteorological Society
Abstract: The authors present in detail the laboratory apparatus and techniques that were used to complete a full radiometric calibration of two space-based lightning detectors: the optical transient detector (OTD) and the lightning ...
Three Dimensional Strains in Human Posterior Sclera Using Ultrasound Speckle Tracking
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Intraocular pressure (IOP) induced strains in the peripapillary sclera may play a role in glaucoma progression. Using inflation testing and ultrasound speckle tracking, the 3D strains in the peripapillary sclera were ...